"The G-spot, also called the Gräfenberg spot (for German gynecologist Ernst Gräfenberg), is characterized as an erogenous area of the vagina that, when stimulated, may lead to strong sexual arousal, powerful orgasms and potential female ejaculation.^[1] It is typically reported to be located 5–8 cm (2–3 in) up the front (anterior) vaginal wall between the vaginal opening and the urethra and is a sensitive area that may be part of the female prostate.^[2]

"The existence of the G-spot has not been proven, nor has the source of female ejaculation.^[3][4] Although the G-spot has been studied since the 1940s,^[2] disagreement persists over its existence as a distinct structure, definition and location...."(Wikipedia article on G-spot, accessed 9-2021)

The "G-spot" was named in a paper published in 1981: Frank Addiego ,Edwin G. Belzer Jr., Jill Comolli, William Moger, John D. Perry & Beverly Whipple, "Female ejaculation: A case study," Journal of Sex Research, 17 (1981) 13-21.